Last post on Nov 26, 2013 at 5:54 PM
You are in the Chevrolet Silverado & GMC Sierra
What is this discussion about?
GMC Sierra 1500, Chevrolet Silverado 1500, Fuel System, Truck
#292 of 415 Re: Fuel Mgt Problem [chuck1]
Oct 11, 2012 (10:48 am)
100,000 miles, it now has 105,000.
The problem definitely was occuring prior to 100,000.
Apparently, you are a GM employee, your tone certainly indicates it.
#293 of 415 Re: Fuel Mgt Problem [rem308]
Oct 11, 2012 (1:35 pm)
Not a GM employee - not at all. But there are several posts like yours. Who's fault is it that YOUR MECHANIC did not diagnosed the problem correctly?
How long should manufacturers be liable for mechanical issues? 100K? 200K? 300K?
It's easy to get on the Internet to complain. Harder to get some real facts on this forum sometimes as to what the real circumstances are.
#294 of 415 Re: Fuel Mgt Problem [rem308]
Oct 24, 2012 (10:18 am)
Apparently, you (Chuck 1) are a GM employee, your tone certainly indicates it.
It's obvious that Chuck1 is being paid well by GM. It looks like he's been posting on this site for years and always very quickly degrades anyone's compaint and sides with GM. NOBODY would waste that much time making himself available to respond in the defence of any giant corporation without being paid unless.........., well I can't think of any other reason??
#295 of 415 Re: Fuel Mgt Problem [string2]
Oct 24, 2012 (11:47 am)
I have been posting for years because I have been a member of Edmunds for that long. In addition, if you check my posts it is clear what cars I have owned. As an ex-owner of a Toyota 4Runner (that I towed with) and Honda Accord, I have contributed on those forums. Check out the 4Runner towing forum. A GM employee would NEVER OWN A TOYOTA!
I DON'T SIGN ON TO EDMUNDS JUST TO COMPLAIN.
The thing that gets me agitated is when someone comes on here and says my truck isn't working right because the alternator is discharging. IT'S SUPPOSED TO WORK THIS WAY!
This isn't fair to people who are looking at these vehicles.
Then they try to justify what they are saying because they work on computers.
OK-I guess some know more than the engineers who designed the Silverados.
#296 of 415 Re: Fuel Mgt Problem [rem308]
Oct 26, 2012 (8:36 am)
I agree with you 100% How do we get the word out about these AFM engines? I share your pain too. I didn't realize these were defectively engineered engines until now.
I have a 2008 4x4 Z71 with 5.3L AFM. Primarily highway driven miles with weekend hunting trips, but no heavy duty offroading. Oil changes at recommeded intervals; minimal oil loss between.
At 145,000 miles, the lifters & camshaft went out. I think AFM shortens engine life. I've owned GM trucks(and Fords and Dodges) for three decades & normally get 300K miles from a motor. Of course, GM won't even share in the cost of repair - which is several thousand dollars - as the mileage is out of warranty. Even though I like the styling, handling & performance in muddy conditions, I'll be swapping for a Ford or Dodge or try a Toyota asap.
Like you, if you own one of these engines, be sure to trade if off before the warranty expires, or even better, buy something else to begin with!
#297 of 415 How long should they be responsible?
Oct 26, 2012 (10:03 am)
How long do you think a manufacturer should be responsible?
#298 of 415 Re: How long should they be responsible? [chuck1]
Oct 28, 2012 (5:06 am)
You have a valid question. My answer is "it depends". I purchased my first chevy truck from this dealer in 1985 and several more since then. Have not had internal engine trouble in the past. Have rigorously followed maintenance schedule for safety reasons and to avoid costly repairs such as this. Have paid premium cost at the dealer for such service and expected more from them. Our government also used some of my tax dollars to bail out General Motors during the fiscal crisis. I personally purchased the 2008 Silverado, also helping out GM in their time of need. I could have bought a Dodge, Ford or Toyota. I've had excellent experiences with all three brands.
AFM technology was first used in the 2007 truck. I wasn't aware of premature lifter failure until my truck broke. This was a surprise and not a good one. There is a design flaw in this system. Lifters need lubrication to perform properly over the long term. There should at least be a disclaimer that lifters and camshaft will need replacement after the initial warranty so that as consumers, we can include these costs in our buying decisions. After all, purchasing and maintaining a vehicle for most people is our largest investment after our home.
I wanted GM to at least cover the cost of the parts and for the dealer to discount the labor. Denied by both.
I hope these forums inform others in their purchasing decisions, both for used vehicles equipped with AFM engines and for buyers of new vehicles that intend on keeping them past warranty.
Now, back to your original question. Warranty of 100,000 miles is excellent. Most folks don't drive the high highway miles that I do so probably will never reach that level. For individuals like me that drive a lot, allow the dealer to perform all service work and properly maintain their vehicle, mileage should be extended on engines possibly for lifetime of ownership. They should at least cover longer timeframe for new, untested technology.
#299 of 415 08 GMC Sierra AFM problems
Oct 29, 2012 (5:54 pm)
We have a problem with our AFM, when we're in V8 mode, the motor has a squealing sound. At first I thought it was the idler pulley or the tensioner...but I removed all the belts and started the truck. The squeal was still there, I thought it was the seal on the crankshaft but when I crawled under the truck, the sound got louder and more toward the rear of the truck, like near the transmission. We took the truck for a drive and we noticed the when the truck went into V4 mode, the squeal went away. When it went back into V8, the squeal came back. Anyone else have this problem?
#301 of 415 Re: 08 GMC Sierra AFM problems [raldo]
Oct 30, 2012 (8:11 am)
If you were planning on working with a GM dealership to get this checked into, we're available to check in on this with them. Please contact us via email at socialmediagm.com with more information (including your name and contact information, a brief summary of the situation, the last 8 of your VIN and mileage, and the name of your dealership).
Sarah, GM Customer Service